Miharu Koshi (?????, Koshi Miharu, born January 3, 1960) is a Japanese singer and musician.
Her career started in the late 1970s performing Japanese new music.
By the mid-1980s she was performing music with electronic instruments, with many albums produced by Haruomi Hosono.
Her later work has led to European classical music, French chanson and early 20th-century European Jazz, which she sings in several languages (most often French).